thompson



2 Sheets-Sheet 1.

(No Model.)

J. S. THOMPSON.

COMBINED ILLUMINATOE, HEATER, AND BLOW PIPE. No. 389,264.

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NA mms. mwmnqmpw. wnhmgnm D c (No Model.)v 2 Sheets-Sheet 2.

J. s. THOMPSON. COMBINED ILLUMINATOR, HEATER, AND BLOW PIPE. No.389,264.

Patented Sept. 11, 1888.

N. PETERS, Pnomlmwgmplwr. wuhinman, D4 c UNITED STATES PATENT OEEIC JOHNS. THOMPSON, OF ATLANTA, GEORGIA, ASSIGNOR OF ONE-HALF TO ROBERT A.HOLTJIDAY AND JOHN S. HOLLIDAY, JR., BOTH OF SAME PLACE.

COMBINED ILLUMINATOR,

HEATER, AND BLOW-PIPE SPECIFICATION forming part of Letters Patent No.389,264, dated September 11, 1.888.

Application tiled .Tune il, 1887.

To all whom, it may concern:

Be it known that I, .I oHN S. THOMPSON, a citizen of the United States,residing at Atlanta, in the county of Fulton and State of Georgia, haveinvented certain new and useful Improvements in Combined Illuminator,Heater, and Blow-Pipe; and I do declare the 'following` to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appcrtains to make and use thesame, reference being had to the accompanying drawings, and to theletters and iigures ofreference marked thereomwhich form a part of thisspecification.

This invention relates to a combined illuminator, heater, and blow-pipe,and has 'for its object the production of a simple, compact, andefficient device or organization capable of performing the workintendedin a convenient, reliable, and expeditious manner; and to thatend the improvement consists in the novel construction and combinationof parts, which will be more fully hereinafter set forth and claimed,and shown in the annexed drawings, in which- Figure 1 is a side view ofa device embodying myinvention; Fig. 2, a transverse section on the lineX X of Fig. '1, showing a modification by dotted lines; Fig. 3, a topplan View, parts broken away, of the device turned onequarter wayaround, showing a modified form of gas-regulating device; Fig. 4, a sideview of the modified form shown in Fig. 3; Fig. 5, a perspective View,parts being broken away, of the cock and the mixing-tube; and Fig. 6, adetail View, on an enlarged scale, ofthe modiiied form of gas-regulatingdevice shown by dotted lines in Fig. 2.

Vithin the base A is centrally located the compartment B, from which thetubes C C C C3 radiate and extend to the shell,where they are providedwith the cocks D D D2 D3, respectivcly. The burner-tube E of theilluminator E communicates with the compartment B, and is provided withthe cock c, for regulating the flow of gas and turning it on and off.Either of the cocks D or D2 may be connected with the street-main orsuitable reservoir of gas by the tube a, which is shown ap- Scrial No.210,985. (No model.)

plied to the cock D'',which,when open, admits the gas to compartment B,and from it to the other cocks.

Each of the cocks D and D`z is provided with a heater, the one heaterbeing larger than the other, and the heater' F is arranged between thegas supply or reservoir and the cock D, and is provided with the cock f,for controlling the supply of gas thereto, while the heater G is locatedbeyond the cock D?, so that the latter comes between it and thecompartment B. The cock D is in communication withand is connected withthe tank I, containing a gassuch as nitrous oxide, oxygen, or any gaswhich will promote and produce a perlect combustion. A pipe, J, extendsacross the compartment IS, and is secured at one end to the cock D', andat the other end communicates with the tube or mixing-chamber C, and mayextend therein some considerable distance, as shown in Figs. 3 and 6,and may terminate in a conical end, which is adapted to iit avalve-seat, as shown in Fig. 3, or approach close to the end of the cockD, as shown by dotted lines in said Fig. 2 and full lines in Fig. 6; orit may terminate at the side of the compartment opposite to that atwhich it entered in a cap, K, which is fitted within the tube ormixing-chamber C. The closed end of the cap is provided with a series ofopenings, 7u, which are arranged in a circle about the tube J, and arenormally closed by the annular valve L, placed within the cap and heldin position by the spring Z, which is of suflicient tension to yieldunder the pressure of the gas from the compartment, but will force thevalve to its seat in the event of back-pressure, or an excessivepressure ot' gas within the mixingchamber or tube CH. The device beingattached to a suitable source of gas-supply, and the cock being opened,the compartment B is filled with gas, and by opening cock e theilluininator may be used, or by opening cock DZ the heater G is broughtinto operation. Cocks D and D being opened,the nitrous oxide fromreservoir I and the gas from compartment B, which are mixed in the tubeor mixing-chamber C, pass ot'f to the blow-pipe. The heater F issupplied direct from the gas-reservoir,

and may be used independently ofthe illuminator, blow-pipe, and heater.

The heaters F and G are of ordinary construction, and are provided toproduce a compact device which will combine the features of adrop-light, blow-pipe, and heater.

The device is connected with any suitable source for supplying theilluminatinggas-as the gas-pipes which are connected with the gas-mainsin a cityby the flexible tube a, through which vand tube Czthe gas isconveyed into compartment B, from whenceit passes into the illuminatorand the tubes G, C', and C3. To use the blow-pipe the gas from I is letinto J, and, passing into G'commingles with the gas therein from B, themixed` gases from C3 being conveyed to the blow-pipe, where they areburned, the intensity of the iame being regulated by the proportion ofthe gas from I mixed with the gas from B.

It will be observed that the base A is hollow and contains thesupplemental compartment B and the-tubes G and c. The compartment Breceives the illuminating-gas and supplies itt'o the illnminator,theheaters, and the bloW- pipe. The base, in addition to forming a case forthe supplemental compartment and a support for the illu minator and theheaters, forms a stand for thev bloW-pipe and a means of connectionbetween the tank I, the illuminatinggas supply, and the said blow-pipe,as will be readily understood.

Having thus described my invention, whatI claim, and desire to secure byLetters Patent, 1s-

1. In a combined'illuminator, heater, and blow-pipe, the combination,with the burnertnbe E and the hollow base having the supplementalcompartment located therein,of the tank I, the tubes extended laterallyfrom the compartment and provided with cocks, the tube extended acrossthe compartment and connected at one end with one of the cocks, andestablishing communication at its other end with another of the cocks,substantially as and for the purpose described.

2. In a combined illuminator, heater, and blow-pipe, the combination,with the burnertube E and the hollow base having the compartment B, theVradial tubes provided with cocks, and the cap K, closing the end of oneof the tubes and having openingsk, of the pipe J, extending across thecompartment B, and connected at one end with one of the cocks and at itsother end with the said cap K, the apertured valve L, and the spring Z,substantially as and for the purpose described.

In testimony whereof I afx my signature in presence of two witnesses.

JOHN s. THOMPSON.'

Witnesses:

E. H. THORNTON, M. B. Token'r'r.

